From @masak

<diakopter> rakudo​: say (role foo {}).^roles.[0].^methods
<p6eval> rakudo 4fc3af​: OUTPUT«returnsof␤»
<masak> rakudo​: say (role foo {}).^roles.[0].^methods.perl
<p6eval> rakudo 4fc3af​: OUTPUT«Method 'perl' not found for invocant of
class 'ResizablePMCArray' [...]
* masak submits rakudobug

From @bbkr

On Kiev build​:

$ perl6 -e 'say (role foo {}).^roles.[0].^methods'
Method 'roles' not found for invocant of class 'RoleHOW'
  in main program body at line 1

The RT System itself - Status changed from 'new' to 'open'

From @bbkr

NOM​: works fine, taking for tests

bbkr​:nom bbkr$ ./perl6 -e 'say (role foo {}).^roles.[0].^methods'
eager elems end classify infinite flat hash list pick roll reverse sort
values keys kv pairs Array grep first join map min max minmax
postcircumfix​:<[ ]> at_pos all any one none postcircumfix​:<{ }> reduce
ACCEPTS WHERE WHICH WHY Bool so defined new CREATE bless BUILDALL
Numeric Str Stringy item say gist perl DUMP DUMP-ID isa does can clone
Capture dispatch​:<var> dispatch​:<​::> dispatch​:<!> dispatch​:<.^>
dispatch​:<.=> dispatch​:<.?> dispatch​:<.+> dispatch​:<.*> dispatch​:<hyper>

From @moritz

Now tested in S12-introspection/roles.t.

@moritz - Status changed from 'open' to 'resolved'